A new baby is always exciting news, but it’s especially exciting when it may have been born from just one parent.

Shreveport Aquarium in Louisiana recently welcomed a baby swell shark. The egg hatched in January, about eight months after it had first been discovered. The aquarium said it may have gone unnoticed for a month or two before that. However, there are only two females in the tank, and neither of them has had any interaction with a male in more than three years.

According to the aquarium, this means one of two things happened: Either delayed fertilization, or parthenogenesis, which is when an egg develops without being fertilized. This form of asexual reproduction is sometimes observed in fish, snakes, lizards, and even birds.

Greg Barrick, the aquarium’s Curator of Live Animals, says, “This situation is incredible and shows the resilience of this species. We are very excited in the coming months to confirm whether this was indeed a case of parthenogenesis or if it was delayed fertilization. It really proves that life... uh... finds a way.”

Once the pup – named Yoko after ‘onyoko, the Chumash word for shark – is old enough, they’ll perform a DNA analysis to see for sure how the youngster came to be.

In the meantime, Yoko is currently doing well but may face challenges due to how he or she developed. Visitors to the aquarium can’t yet see the pup, but you can follow updates on the aquarium’s Facebook page.